She was an atheist and many on this forum will have nothing to do with her because of that. Surprisingly though, most do and the reason is, IMHO, the shared or at least broad overlap in common moral and cultural values.
Many good Christians simply cannot accept Rand's rather loose sexual behavior, both personally and with her fictional characters, and I think that colors their view of her fundamental philosophy. Many hard cord Rand fans cannot accept the 'Love Your Neighbor as Yourself' concepts of Christianity and that too colors their ability to see the moral overlap. My answer to that is that you should study the interaction of Rand Libertarians and good Christian people. You will not see conflict in practice. Try the same thing with Libertarians and Muslims and you have war. For the latter case there are huge moral and even larger cultural differences that simply cannot be reconciled. But fortunately for most of us that conflict doesn't really exist between Rand Libertarians and Christians.
That's too bad but I really don't see it changing. People get stuck in their belief systems and it's tough to nudge them in new directions.
The 100% My Way or the Highway Christians and the 100% My Way or the Highway Rand Libertarians are definitely in the un-nudgeable group but most Freepers manage to keep their bible and their copy of Atlas Shrugged piled neatly beside their bed without risking loss of sleep.
Of course your mileage may vary but this is my real life experience with this issue.
Thanks for that thoughtful answer.